Hi, Patrick. There is a product that I tried called Motsenbocker's Lift Off that is a latex based paint remover. Honestly, it did not do much on real old paint spots but it seemed like it would work on new paint. It is supposed to be biodegradeable and water based. I got it from a local hardware store but you might be able to find it at a home center. Follow the label directions, particularly the safety instructions. Wearing eye protection while using it would be a good idea.